Clutch-facing



CLUTCH FACING .Filed Oct. 24, 1934 Patented Jan. 14, 1936 UNITED STATES OFFICE CLU'IICH-FACING Gutav Walters, Middletown, Con'n. Applicatio otobepz l, 1934 SeriaLNo. '149,730

6 Claim. (ol.- mig-197) This invention relates to improvements in utch a in s and` more p rt cularly to cltchrm d of -mpregrated mutirpy woven em u. i

One object of this invention isto provide an mproved; mp egnated m ltirplm woveI- a r %nic em e hi h. wil minmize r lim t met nde y o n odu e roo e the fa e of them t l wit h-m m e which coop rates W th 10 th fr t on fac of t l t -f in W th the a ov and` o he o i ct in i w, th

r ich re i clos dn hi app icationh h ac en p n inj d awin dn which ers wey f: o h invent qn a shown forillustrative purposes: i

me. l is a front elevatioh illustrating a clutchfaihg made accordance with this invention;

r is a rear elevation of the clutch-facing 29 ow me.`

a, sectional View on 1ine3-`--3 of 2; .is a sectional View on the line l l` of i Eier is a r at y -en re d al i w imi.-

inset portions of the splicing-members;

'lis a. sectiona iview online T-'l of Eig. 6; Fig Bie a. s ectiona,1 view similar to Eig. 7, of a modified: construction. r

Fig; 9 is ant-enlarge d fragmental view similar z. chtcl facing of disk form, with an inner opening' IL and having ends` adjacent and abutting along the line I2, the 'adjacent ende-of thefacing -being ;connectedor joined together` `by the splicing-members !3.

50 In the manufacture of clutch-fecingsl of; the

f or n shown in the drawing, a. m lti-ply fabric ofithe approximate width of the annular dik hQw in Fig.` 1, `is, according to one'mode of `.m e fas firil w ven as a strai ht; ength of 516@ material. Thisst p-o mat ra c ov ew th twotplie. of iabri Hand l5, connected together by 'binder l6v (Fig. Ir actual practice, the wo el tes f` a r and: o d` b in l e ontact; h ne a e h r bu ha eh n he i in E g- 5 as se ara ed y a ara m m tto 5 more l e n rlu t he nv nt on Ea h Fly of fahric co its of the warp strards I'I and the wet stra ds or picks lg, which mary consist of one or more strandlle gths. Each strand has a wire core le, preferahlyfdf brass or zine and preferably 10 of a` diameter rnging between .0O8'" and .010", which is provided` with a covering formed of a suitable rr'ixture of a sbestosq a d cotton. The outside, diameter oi the finished strand. prefera y i a p ox tel Aiterthestrq.qimulti ply fabrc is completed, it is wet and wo hd spirallyedgewise about a r a drelof the sizeof thexopenjng l I and presed to, shepe qnthe m ndrel. After it dries, a,` lg gi tud lv ut t h t the en h of\ n ide i the piraDy-W nd a whichresults in prpd cing' a.,` plurality of disk-like members sim lar o k` ID s o n e The f h ic are preerably impregnated. With a, suitable mixture ofaphaltum and Chinawoodoil, or with barytes and Chinaood` oil, after which the dis lsare baked. The splici g.- members !3 may then be applied to connect the adjacent ends of the clutch-facing together, after which o eor moresubequentimpregnatio stand 0 baking v n a h hac n he bo thfgpelo' ;tr d 2] and the inner edge 22 `::tre Sm nd. rue-to he desired d m the finihedjthihress f thediskordinarly being from .r or' o 43 lnthe forr of the intention illustrated in Fig. 1 to@ the splicin g-vmemher !3, whichare initial ly of u -fshped form, areforced through adjoi i g ten dof the cl tchfacing to bring the bodyzpprtion 23 against one face and the clamp- .i g-.finger 24 against theopposing face of the chtchfacing, withthe leg-portions 25 extendirg throhgh'adjacent end-portionsthereof. The

n -fin e l i s f dCl wnr h pl below he i tim-mc :9 rm by the D Y a hil theh dy-eottien 23 is re abm i b.- stantially flush with the rear'face 21 formed by t f a a r o l p fi ger Zflerepreferaby well spaced apart from* on anoth r: e 2.. 9 o ap r a t o closely to th in q t ctr l h adi c nt portions of the h tch itci g, order to ninir ize` the tendehgy of piees of the lutch-facing becoming bxe k p en disengagd from the clutchgg facing, due to the disruption of the edge along the line of juncture 12. I

The depressions 28 overlying the inset portions of the splicing-members at the friction-face tend to collect metal particles from the flywheel or pressure-plate (not shown) which frictionally engages the .friction-face of the clutch-facing, With the result that some of these metal particles ultimately may become embedded in the splicing-members, which latter ordinarily are of brass, with a resultant tendency to cause the metal particles to score or groove the fiywheel or pressure-plate. To prevent this, the depressions 28 may be filled with suitable filler-pads 29 (Figs. 6 and 7). One way of doing this is by filling the depressions with a putty or cement formed of asbestos and China-Wood oil. r

In the modified Construction shown in Fig. 8, the clutch-facing has portions of the splicingmembers IS forced down deeply below the friction-face 29 while the clutch-facing is in a flowable or semi-plastic condition, after which, the clutch-facing is subjecteol to a pressing operation which causes the material of the clutch-facing to flow or spread over the depressed portions 23, or 24 of the splicing-members !3 so as `to meet along the line 30, to thus form filler-pads and thereby eliminate the clepressions formed by the operation of insetting the portions of the splicing-members below the friction-face of the clutch-facing. Then the clutch-fac ing disks are preferably impregnated with a suitable material such, for example, as a mixture of asphaltum and China-Wood oil, or barytes and China-Wood oil, after which the disks are baked. The clutch-facing may then be ground to accurate size similar to the manner previously described. i

It will be observed that although the clamping-fingers 24 cut pretty well through the ply of fabric l l at the friction-face, the body-portion 23 does not substantiallycut the fabric ply l at the rear-face, but while distorting and compressing it, leaves it without serious impairment of the continuity and strength of its strands, thus providing ample mechanical strength to the spliced adjacent ends of the clutch-facing, notwithstanding that the end-fingers 24 may have partially cut through the fabric ply 14 of the frotion-face.

In the form of the invention illustrated in Figs. '9 and 10, instead of inserting the splicing-mem- 'bending of the clutch-facing joint when the clutch-facing is used on a wrinkled type ,of clutch-member, and 'also from handling prior to its insertion in the clutch. 'The friction-face 20 'of the clutch-facing shown in Figs. 9 and 10 has "the body-portions 23 and clamping-fingers 24 inset well below the friction-face 20 in a similar manner to the showing' of the clamping-fingers 24 of Figs. 5 and 6, and the inset-portions 23 and r or Fig. 8.

24 may be covered as illustrated inFigs. ,6 and '7,

, Thus, it will be observed from Fig. 9 that Where the body-portions 23 ofthe splicing-members' r low the friction-face, as is also true of the clamping-fingerszd at the friction-face'. At the rearface ZI, shown in Fig; 8, the body-portions 23 andclamping-ffngers 24 are preferably merely made fiush with the rear-face in a manner similar to the showing in Figs 5 and 6.

By thus having the portions of the splicingmembers which are located at the friction-face of the clutch-facing, inset well below the friction-face, all risk of scoring of the metal of the clutch-member, which is to operate in conjunction with the friction-face of the clutch-facing, is avoided, without, however, unduly weakening the material from which the clutch-facing is made.

The invention may be carried out in other specific ways than those herein set forth without departing from the spirit and essential characteristics of the invention, and the present embodiments are therefore to be considered in all respects as illustrative and not restrctive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.

I claim: v

1.` A clutch-facing comprising: a disk formed of impregnated multi-ply woven fabric having two ends adjacent one another and with one play forming a friction-face ply and another ply forming a rear-face ply; and a plurality of splicing-members joining said adjacent ends; each splicing-member including a body-portion engaging one of said face plies, a pair of leg-portions extending through said adjacent ends, and a pair of clamping-fingers engaging the other of said face plies; the portions of said splicing-members engaging said friction-face ply being inset substantially below the surface of said friction-face.

2. A clutch-facing comprising: a disk'fornred of impregnated multi-ply woven fabric having two ends adjacent one' another and with one ply forming a friction-face 'ply and another ply forming a rear-face ply; and a plurality of *splicing-members joining said adjacent ends; each splicing-member including a body-portion engaging one of said face plies, a pair of leg-portions extending through said adjacent ends, 'and a pair of clamping-fingers engaging the other of 'said 'face plies; the portions of said splicingmembers engaging said friction-face ply being inset substantially below the surface of said frotion-face ply, and the face-engaging portions of said splici ng-members at said rear-face being substantially fiush with the surface of said rearface.

3. A clutch-facing comprising: a disk formed of impregnated multi-ply woven fabric having two ends adjacent one another and with oneply forming a friction-face ply and another ply formig a rearfac'e'ply; and a plurality of splicing-members joining said adjacent ends; each splicing-member including a body-portion engaging one of said face plies, a pair of leg-portio ns extending through said adjacent ends, and a pair of clamping-fingers engaging the other of said face plies; the portions of said splicing-members engaging said friction-face ply being inset substantially below the surface of said friction-face, the faceply engaging portions at each said face including some body-portions and some clamping-fingers of splicing-members. i g

%LA clutch-facing comprising: a disk formed of impregnated multi-ply woven fabric having two ends adjacent one another and with one ply members joining said adjacent ends; each splicing-member including a body-portion engaging one of 'said face plies, a pair of log-portions extending through said adjacent ends, and a pair of clamping-ngers engaging the other of said face plies; the portions of said splcing-members engaging said fricton-face ply being inset substantially below the surface of said fricton-face, and the face-engaging portions of said splicing-members at said re ax-face being substantially flush with the surface of said rear-face, the face-ply engaging portions at each said face including some body-portions and some clamping-fingers of splic ing-members.

5. A clutch-facing comprising: a disk formed of impregnated multi-ply woven fabrie having two ends adjacent one another and with one ply forming a friction-face ply and another ply form'- ing a rear-face ply; and a plurality of splicingmembers joining said adjacent ends; each splicing-member including a body-portion engaging one of said face plies, a pair of leg-portions extending through said adjacent ends, and a pair of clamping-fingers engaging the other of said face plies; the portions of said splicing-members engaging said friction-face ply being inset substanapart and away from the line of juncture of said adjacent ends.

6. A clutch-facing comprising: a disk formed of impregnated multi-ply woven fabric having two ends, adjacent one another and with one ply forming a friction-face ply and another ply forming a rear-face ply; a plurality of splicing-members joining said adjacent ends; each splicingmember including a body-portion engagng one of said face plies, a pair of leg-portions extending through said adjacent ends, and a pair of clamping-fingers engaging the other of said face plies; the portions of said splicing-members engaging said friction-face ply being inset substantially below the surface of said frietion-face; and fillerpads interposed between said inset-portions of said splicing-members and the plane of said frietion-face.

GUSTAV WALTERS.

tially below the surface of said friction-face, andat least some of each pair of clamping-fingers ex-; tending toward each other with their ends spaced'- 

